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Q1) Consider an improved version of the Vigenere cipher, where instead of using multiple shift ciphers, multiple mono-alphabetic substitution ciphers are used. That is, the key consists of t random permutations of the alphabet, and the plaintext characters inpositions i; t+i; 2t+i, and so on, are encrypted using the ith permutation. Show how to break this version of the cipher.
Determine successive values of congestion window in bytes?
Create a plan to set up a local area network. Design a boardroom-quality Microsoft® PowerPoint® presentation of 10-12 slides detailing your plan.
Illustrate how many protocols and protocol implementations are required to permit all nodes to communicate?
Develop a thesis statement pertaining to social networking. Identify writing strategies (mind mapping, brainstorming, and free writing)for developing the thesis and summarize experiences.
Conduct Internet search to locate case study which illustrates how VoIP was beneficial to the organization. Why did organization need a VoIP solution?
Is there any protocol which you and Luke can use to avoid defeat? If not, describe why not. If there is protocol that would work, describe it.
Assume that sender sends silence suppressed RTP stream of G.711 audio to receiver (G.711 is the name of standard for 64Kbps PCM). Outline algorithm which uses sequence numbers and time stamps of RTP packets to find out beginning of new talk spurt?
With the advent and increasing popularity of social networking, individuals are connected to everyone but connecting to no one.
What is the system development life cycle and what are the best ways to bring social networking to life within this cycle?
Write down the advantages of some of the current technologies including VoIP, Unified Communications, Virtual Private Networks.
As security manager at XYZ Corporation, you are responsible for managing intrusion detection environment. If you were given the ability to build the environment from scratch, would you use network based IDS, host based IDS, or a combination?
The telephone communication systems and long distances agreements are managed by a telecommunications department in the headquarters that reports to the vice president of finance. Outline pros and cons of both alternatives.
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